xen: suspend: pass extra hypercall argument via suspend_info struct

Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Reviewed-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>

1 files changed, 8 insertions, 2 deletions

diff --git a/drivers/xen/manage.c b/drivers/xen/manage.c
index 5c0184fb9d84..6ce6b91e7645 100644
--- a/drivers/xen/manage.c
+++ b/drivers/xen/manage.c
@@ -36,6 +36,7 @@ static enum shutdown_state shutting_down = SHUTDOWN_INVALID;
 
 struct suspend_info {
         int cancelled;
+        unsigned long arg; /* extra hypercall argument */
 };
 
 #ifdef CONFIG_PM_SLEEP
@@ -58,7 +59,7 @@ static int xen_hvm_suspend(void *data)
          * or the domain was merely checkpointed, and 0 if it
          * is resuming in a new domain.
          */
-        si->cancelled = HYPERVISOR_suspend(0UL);
+        si->cancelled = HYPERVISOR_suspend(si->arg);
 
         xen_hvm_post_suspend(si->cancelled);
         gnttab_resume();
@@ -97,7 +98,7 @@ static int xen_suspend(void *data)
          * or the domain was merely checkpointed, and 0 if it
          * is resuming in a new domain.
          */
-        si->cancelled = HYPERVISOR_suspend(virt_to_mfn(xen_start_info));
+        si->cancelled = HYPERVISOR_suspend(si->arg);
 
         xen_post_suspend(si->cancelled);
         gnttab_resume();
@@ -150,6 +151,11 @@ static void do_suspend(void)
         si.cancelled = 1;
 
         if (xen_hvm_domain())
+                si.arg = 0UL;
+        else
+                si.arg = virt_to_mfn(xen_start_info);
+
+        if (xen_hvm_domain())
                 err = stop_machine(xen_hvm_suspend, &si, cpumask_of(0));
         else
                 err = stop_machine(xen_suspend, &si, cpumask_of(0));